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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/usbd/app_usbd_core.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/usbd/app_usbd_core.h
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+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/usbd/app_usbd_core.h
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+/**
+ * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+#ifndef APP_USBD_CORE_H__
+#define APP_USBD_CORE_H__
+
+#include <stdint.h>
+
+#include "sdk_common.h"
+#include "nrf_drv_usbd.h"
+#include "app_usbd_types.h"
+#include "app_usbd_class_base.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * @defgroup app_usbd_core USB Device high level library core module
+ * @ingroup app_usbd
+ *
+ * @brief @tagAPI52840 Core module that manages current USB state and process device requests.
+ * @{
+ */
+
+/**
+ * @brief Core interface configuration
+ *
+ * Core instance would have 2 endpoints (IN0 and OUT0).
+ * The interface number does not matter because it is not used.
+ */
+#define APP_USBD_CORE_CLASS_CONFIGURATION ((0, NRF_DRV_USBD_EPOUT0, NRF_DRV_USBD_EPIN0))
+
+/**
+ * @brief USB Device state
+ *
+ * Possible USB Device states according to specification.
+ */
+typedef enum
+{
+    APP_USBD_STATE_Disabled  , /**< The whole USBD library is disabled */
+    APP_USBD_STATE_Unattached, /**< Device is currently not connected to the host */
+    APP_USBD_STATE_Powered   , /**< Device is connected to the host but has not been enumerated */
+    APP_USBD_STATE_Default   , /**< USB Reset condition detected, waiting for the address */
+    APP_USBD_STATE_Addressed , /**< Device has been addressed but has not been configured */
+    APP_USBD_STATE_Configured, /**< Device is addressed and configured */
+}app_usbd_state_t;
+
+/**
+ * @brief EP0 handler function pointer
+ *
+ * Type of the variable that would hold the pointer to the handler for
+ * endpoint 0 messages processing.
+ *
+ * @param p_contex Context variable configured with the transmission request.
+ */
+typedef ret_code_t (*app_usbd_core_setup_data_handler_t)(nrf_drv_usbd_ep_status_t status,
+                                                         void * p_context);
+
+/**
+ * @brief Variable type used to register EP0 transfer handler
+ *
+ * EP0 messages are processed by core instance.
+ * Another class can register itself to receive messages from EP0 when requesting
+ * for Setup data transfer.
+ */
+typedef struct
+{
+    app_usbd_core_setup_data_handler_t   handler;   //!< Event handler to be called when transmission is ready
+    void                               * p_context; //!< Context pointer to be send to every called event.
+} app_usbd_core_setup_data_handler_desc_t;
+
+/*lint -save -e10 -e26 -e93 -e123 -e505 */
+/**
+ * @brief Declare Core instance type
+ *
+ * USBD core instance type definition.
+ */
+APP_USBD_CLASS_TYPEDEF(app_usbd_core,
+        APP_USBD_CORE_CLASS_CONFIGURATION,
+        APP_USBD_CLASS_INSTANCE_SPECIFIC_DEC_NONE,
+        APP_USBD_CLASS_DATA_SPECIFIC_DEC_NONE);
+/*lint -restore*/
+
+/**
+ * @brief Access to core instance
+ *
+ * Function that returns pointer to the USBD core instance.
+ *
+ * @return pointer to the core instance
+ */
+static inline app_usbd_class_inst_t const * app_usbd_core_instance_access(void)
+{
+    extern const APP_USBD_CLASS_INSTANCE_TYPE(app_usbd_core) app_usbd_core_inst;
+    return (app_usbd_class_inst_t const *)&app_usbd_core_inst;
+}
+
+/**
+ * @brief Default simple response to setup command
+ *
+ * This function generates default simple response.
+ * It sends ZLP when required and on takes care on allowing status stage when
+ * transfer is finished.
+ *
+ * @param p_setup Pointer to original setup message
+ * @param p_data  Pointer to the response. This has to be globaly aviable data.
+ * @param size    Total size of the answer - The function takes care about
+ *                limiting the size of transfered data to the size required
+ *                by setup command.
+ */
+ret_code_t app_usbd_core_setup_rsp(app_usbd_setup_t const * p_setup,
+                                   void const *             p_data,
+                                   size_t                   size);
+
+/**
+ * @brief Configure the handler for the nearest setup data endpoint transfer
+ *
+ * This function would be called on incomming setup data.
+ * The correct place to set the handler for a data is when SETUP command
+ * was received.
+ *
+ * @param ep             Endpoint number (only IN0 and OUT0) are supported.
+ * @param p_handler_desc Descriptor of the handler to be called.
+ *
+ * @retval NRF_SUCCESS            Successfully configured
+ * @retval NRF_ERROR_INVALID_ADDR Last received setup direction does not match
+ *                                configured endpoint.
+ */
+ret_code_t app_usbd_core_setup_data_handler_set(
+    nrf_drv_usbd_ep_t ep,
+    app_usbd_core_setup_data_handler_desc_t const * const p_handler_desc);
+
+/**
+ * @brief Set up a data transfer buffer.
+ *
+ * Returns special internal buffer that can be used in setup transfer.
+ * @return Internal buffer pointer
+ */
+void * app_usbd_core_setup_transfer_buff_get(size_t * p_size);
+
+
+/**@brief Return internal USBD core state
+ *
+ * @return Check @ref app_usbd_state_t to find possible USBD core states
+ */
+app_usbd_state_t app_usbd_core_state_get(void);
+
+
+/**
+ * @brief Check current feature state
+ *
+ * Function checks the state of the selected feature that was configured by the host.
+ *
+ * @param feature Feature to check.
+ *                Only features related to the device should be checked by this function.
+ *
+ * @retval true  Selected feature is set
+ * @retval false Selected feature is cleared
+ */
+bool app_usbd_core_feature_state_get(app_usbd_setup_stdfeature_t feature);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* APP_USBD_CORE_H__ */